11alpha, 12beta-dimethyl-delta4, 8(14), 13(17)-pregnatriene-3, 20-dione



United States Patent 11a,12,B-DIMETHYL-A -PREG- NATRIENE-3,20-DIONE Josef Fried, Princeton, N.J., assignor to Olin Mathieson Chemical Corporation, New York, N.Y., a corporation of Virginia No Drawing. Application July 30, 1958 Serial No. 751,859

1 Claim. (Cl. 260-397 .3)

This application relates and has for its object the pro- VlSlOn of a new physiologically active steriod, which may be represented by the formula EXAMPLE I 9e-flu0ro-12a-methyl-11p-hydroxyprogesterone and 11a, IZfl-dimethyl-M -pregnatriene-3,20-dione To a solution of 60 mg. of 9fl,11B-oxido-12u-methylprogesterone (preparable as described in the application of Thomas et al., Serial No. 711,779, filed January 29, 1958) in 9.5 ml. of chloroform and 0.5 m1. of ethanol is added at 0 hydrogen fluoride gas until a substantial layer of hydrogen fluoride has formed. The mixture is agitated at 0 for one hour and twenty minutes, neutralized with sodium bicarbonate and the layers separated. The chloroform phase is washed with water, dried over sodi- 2,891,070 Patented June 16, 1959 um sulfate and the solvent removed in vacuo. The resi due is dissolved in 5 ml. of benzene and 10 ml. of hexane and the solution chromatographed over a column of 2.2 gm. of acid-washed alumina. Elution with 550 ml. of benzene-hexene (1:2) furnishes about 30 mg. of 1la,12l3 dimethyl A4'8 14)13(17) pregnatriene 3,20-dione, which after crystallization from acetone-hexane has the following properties: M. P. about l40-142; [a] -|-252 (0., 0.33 in chloroform) A7,}; 241 my (e=18,000), 282 my. (11,000)

Analysis.-Calc. for (322112303 C, H, 8.70. Found: C, 81.43; H, 9.01.

Continued elution of the column with 600 ml. of henzene and 400 ml. of benzene-chloroform (9: 1) furnishes about 9 mg. of 9oz-fill010-12ot-II16thYl-l 1 6-hydroxyprogesterone, which after recrystallization from acetone-hexane has the following properties: M. P. about 228-229; [alg -+147 (0., 0.32 in CHClg) A3; 238 mp (e=l9,900)

Ami 2.94:, 5.90, 6.10, 6.22 p

Analysis.--Calc. for CQBHBIOQF (362.46); C, 72.90;. H, 8.62. Found: C, 72.97; H, 8.68.

EXAMPLE II 1 1 aJZB-dimethyl-M -pregnatriene-3,20fl-di0l A solution of 50 mg. of 11a,12B-dimethyl-A pregnatriene-B,20-dione and 50 mg. of sodium borohydride in 20 ml. of methanol is allowed to remain at room temperature for 1.5 hours. After addition of a few drops of glacial acetic acid, water is added and the bulk of the methanol removed in vacuo. The steriod is extracted with chloroform, the chloroform solution dried with sodium sulfate and the solvent evaporated in vacuo. The residual crystals after recrystallization from acetone-hexane have the following properties: M. P. about 171-173 M12, 249 m (20,700) sh 243 (19,300), 250 (13,500)

no carbonyl absorption.

The invention may be variously otherwise embodied within the scope of the appended claim.

What is claimed is: 11a,l2p dimethyI-M- pregnatriene-3,20-d1- one.

No references cited. 

